Material Science Engineering - Dec 2015
Chemical Engineering (Semester 4)
TOTAL MARKS: 80
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Assume data if required.
(4) Figures to the right indicate full marks. 1(a) Limitations of Bohr's model of atom(5 marks) 1(b) Heisenberg's uncertainty principle(5 marks) 1(c) Polymer blends(5 marks) 1(d) Ferromagnetism and antiferromagnetism(5 marks) 2(a) Explain how electrical conduction occures in extrinsic semiconductors.(10 marks) 2(b) Explain the following terms
(ii) Interaction of light with semiconductors(10 marks) 3(a) Draw iron-iron carbide phase diagram. Mention different phases & explain phase transformation reactions.(10 marks) 3(b) What is creep? Explain mechanism of creep & its types.(10 marks) 4(a) Explain in detail about use of plastic for food packaging.(10 marks) 4(b) Write in detail about
(ii) Graphite(10 marks) 5(a) Explain in detail about mechanism & factors affecting corrosion.(10 marks) 5(b) Explain types of corrosion.(10 marks) 6(a) Explain different materials used for fabrication of equipments in chemical industries.(10 marks) 6(b) Explain the factors affecting selection of materials for equipments in chemical industries(10 marks)